Wire-feeding mechanism for stapling-machines.



O. W. NUNN.

WIRE FEEDING MECHANISM FOR STAPLING MACHINES.

APPLICATION FILED MAY 16, 1914.

1 1 32,1 1 1 Patented Mar. 16,1915.

Mfflejsea 6 In venfai";

THE NORRIS PETERS CO4, PHOTO-L!THU.. WASHINGTON. D. l

UNTTED STATES PATENT OFFICE.

ORION W. NUNN, OF DENVER, COLORADO, ASSIGNOR T0 LANDIS MACHINE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

WIRE-FEEDING MECHANISM FOR STAIELING-MACHINES.

Specification of Letters Patent.

Patented Mar. 16, 1915.

Original application filed. January 21, 1914, Serial No. 813,443. Divided and this application filed May 16, 1914. Serial No. 838,975.

To all whom it may concern Be it known that I, ORION W. NUNN, a citizen of the United States, residing at the city of Denver, county of Denver, State of Colorado, have invented a certain new and useful Improvement in Wire-Feeding Mechanism for Stapling-Machines, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

Figure 1 represents the top view of an embodiment of my invention. Fig. 2 represents a detail front view partly in section. Fig. 3 represents a detail side view partly in section.

My invention relates to button attaching machines, and more particularly to a form of button attaching machine wherein the buttons, and the wire used for the fastening means, are fed separately to the mechanism, sections of the wire cut off and formed into staples and then driven into the article to which the buttons are being attached.

More specifically, my invention relates to the form of machine illustrated and described in my copending application filed January 21, 1914, Serial Number 813,443, for button stapling machine of which this application is a division.

The principal object of my present invention is to provide an improved form of mechanism for handling the wire, by virtue of which a proper amount of wire is fed positively and accurately to the forming mechanism, the wire held against withdrawal while a portion is being severed, or a feed of the wire prevented in case no button is in the proper position to be set.

Other and further objects of my invention will be pointed out hereinafter or will be obvious.

Referring to the drawings, it will be un derstood that the numeral 1 indicates a suitable table or support for the machine. Upon the table are supported suitable brackets 2 and 4 in which is journaled a shaft 5. Shaft 5 is rotated by means of a crank 6 which is actuated by a reciprocating rod 7, or other suitable means, and said shaft operates suitable actuating mechanism including the segment 8 (see Fig. 3), which operates the button feeding, staple forming, and driving mechanism.

As illustrated in Figs. 1 and 2, 9 represents a guide tube by which buttons are fed to a handling tube 10 which directs them to proper position between the antennae 11 to receive the suitable wire, and to be driven. Upon shaft 5 is mounted a disk cam 12, and on the bracket 2 a bell-crank 14 having a bearing member 15 operating in the slot of the disk cam in such fashion that rotation of the disk cam by shaft 5 swings the bell crank on its pivot 14*.

Slidably vmounted in suitable standards 16 is a longitudinally slidable shuttle bar 17, the upper portion of which is formed with the wire channel 17' which is covered through a part of its length by a plate 13 which holds the bar in place in the standards 16. A pivotal connection 18 between bell-crank 14 and shuttle bar 17, causes the former to reciprocate the latter upon the rotation of cam 12. At the forward or lefthand end of shuttle bar 17, is a friction clamping device 19, the tension of which may be regulated by adjustment of screw 20. This friction clamping device preferably consists of a pair of blocks of fiber or vulcanite, and its function is to engage the wire 21 to feed it to the forming mechanism on the forward movement of the shuttle bar.

The wire is carried on a spool 22 which is suitably journaled on the support 1, the relative position of the shuttle bar and the spool being such as to permit the feeding of the wire from the former through the channel 1'7 of the latter. The wire is fed to the cutting and forming mechanism through a channel 24 in a guide plate 25 supported on one of the supports 4, and the portions of the wire which are formed into staples are severed at the inner face of said guide plate. The opposite guide plate 25 forms an abutment to measure the wire into the proper length for the staples.

Operating in proximity to the channel 24 is a detent 26, which is pivoted on the support 4, and pressed into engagement with the wire by a spring 27. The detent has teeth inclined in the direction of the wires movement, and its form and the nature of its mounting are such as to permit forward movement of the wire 21 with the forward movement of the shuttle bar 17 when the channel 24: is not obstructed. 'Rearward movement of the wire with shuttle bar 17, however, is prevented by detent 26 which engages it, holding it securely against a portion of support 4.

Pivoted at 28 on support 4 is a stop lever 29, which has a laterally projecting lug 29 (see Fig. 8) between its lower end and its pivot point. This lug is pressed by a leaf spring 30, which tends to swing the lower end o'flever29 downward. Stop lever 29 has a button engaging finger 31 and a stop finger 32. The former lieS in the path of buttons fed to the antenna 11, and the latter is adapted to swing downward across the channel 2 So as to. close the same and prevent the movement of wire therethrough. A sliding pin 34L is seated in support 4 and its upper end coiiperates with lug 29 on lever'29. The lower end'of pin 34 lies in the path of a rack-bar 35, which is actuated in the pere ien o the ma hine y m ans o segment 8 which is swungby shaft 5 Backbar 35 has its lower end beveled off to. form t Chm face. Upon the downwardstroke of ra k bar 3 this e eee ngag s iding '30 pin 34 and pushes it upward, thereby raising the lower end of lever 29. This releases Y the button, held under button engaging finger 31, permitting it; to be carriedforward by the. forming and setting mechanism. Until the end of theret-urn movement of i her 35, ver- 9 s h h l le a permitting a new button to, be fed to position between the antennae 11. If no button has b n j'edte uc position, e e 29 having nothing t,o,. etop it, will swing. downward t the ful e tent ef i e m ement, Whi Wil in erpeees op finge 2 i ont of the h nne 2 Conseque tly, upon the b equent forward movement ofshuttle bar 17, he Wire will ot be fed int the path o th cu ting and forming. mechan sm, nd th fore, no staple will be formed and driven at th t pera ion of the machine. This; pr ent Wa t vo wire n time, an njury t t e m terial by 'use essly driv ng pl s Wi h ut u ton I will e underet ed f r e, that, in c e a utten is in po itionjto be engaged by finger 3 1 lever 29 will be held partially elevated thereby, so that. finger 32 willnot drop de nto close the channel, 2

Fr m the f geing, it will e .s.een t at I the m chan m f rm e very imple, strong and efficient wire feeding mechanismwhich feedsthe proper amount wire to. the m ehi e f r, each operet eht K hk ng or e ing-of the wire on'the rearward stroke of the shuttle bar 1 7 is prevented by virtue of e e ha th f rwardend o he Wire is engagedby thedetent 2 6 in front Of rather ward movement thereof,

than behind the friction clamp 19. It is 'f also evident'that the mechanism provides a 7 wire feeding device wherein feeding of the construed as limited to the. specific form illustrated and described, WVhat I'c im is: I Y

1. In a button stapling machine, a Wire feeding mechanlsm compr sing ajholder for by said shuttle bar and having constant frictional engagement with the wire, and a detent operating adiacentjthe forward end of the ir dapted t p mit t e movement of wire, a shuttle bar, a tension device carried 7 wire in one direction and hold it aga nst:

gagement superiorto th engagement fth tension dev1ce'.- r a 2, In a button stapling machine,,a wire mov m in th pp ite di e t n byenfeeding mechanism comprising ;a support:

for wire, areciprocating tension device: hav s, constant frictiona e ga eme t; wi h. the wire to feed it, and a detent operating adjacent the forward end'of the wire and option. 1

erabl by m v ment of Wir n ngagemen i a, utt n et plihg m chin Wire d g mech nism c mp ga support for wire, a reciprocating tension member constantly in frictional; engagement with the wire, and a detent, operating adjacent the forward end of the wire andloperable t r y nd adapt dto engage t e w re t overcome the frietional engagement; of the tension member.

t. In a button stapling machine, wire fee n m h n sm e prisin a reeiproea r 11g n n vi a p e to remain censtantly in ri ti nal gagem n with th wire, a detent operating adjacent the forward end ofthe. wire and operable thereby to prevent backward movementof the'wijre, and a stop, device adapted to cooper-ate with the forward end of the wire 9 prevent for- 5. In a button stapling; machine, in combination, a reciprocating wire'feedijng tension device, a stop; device, and means; for interposing said stop device in thepathof a wire engaged by said tensiondevicer r V -5111 a machin of t e ass d s ibed, a spool for holding wire, a rotary shaft, a disk earn operated thereby, a shuttle member provided with as tension} device adapted to ngage and fee wi e from sa d spo l, and

a bell-crank operated from said cam and having pivotal connection with said shuttle member to reciprocate the same.

7. In a machine of the class described, a shuttle member having a slotted portion adapted to receive and guide a Wire, a tension device mounted on the forward end of said shuttle member and adapted to engage a Wire in said slotted portion, and means for reciprocating the shuttle member, for the purpose described.

8. A Wire feeding mechanism comprising a support for Wire, a reciprocating feeding member engaging the Wire and movable thereon in both directions, and a stop member for controlling the feed of the Wire irrespective of the reciprocation of the feeding member.

9. A Wire feeding mechanism comprising a support for Wire, a reciprocating feeding member adapted to feed the Wire intermittently, and a stop member adapted to prevent feed of the Wire during a feeding movement of the feeding device.

In testimony whereof I hereunto aflix my signature in the presence of tWo Witnesses, this 11th day of May, 1914:.

ORION W. NUNN.

Witnesses:

J. H. HINGKE, O. A. HARTMANN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

